Citing a Julia package

Citing a Julia package

In https://github.com/dmbates/MixedModels.jl/issues/60na user asked how to cite a Julia package. I don't have a research paper on the package to cite and was going to recommend citing the URL of the github repository at a specific release, e.g. https://github.com/dmbates/MixedModels.jl/releases/tag/v0.4.5